Change from Baseline in the Measurement and Treatment Research to Improve Cognition in Schizophrenia (MATRICS) Consensus Cognitive Battery (MCCB) to Day 182 [ Time Frame: Baseline to Day 182 or Early Termination ] [ Designated as safety issue: No ]

Change from Baseline in the Schizophrenia Cognition Rating Scale (SCoRs) to Day 182 [ Time Frame: Baseline to Day 182 or Early Termination ] [ Designated as safety issue: No ]

Safety and Tolerability of EVP-6124 or Placebo in Subjects with Schizophrenia [ Time Frame: Screening (Day -42 to Day -15) to Day 182 or Early Terminiation ] [ Designated as safety issue: Yes ]

Signed informed consent, indicating that the subject understands the purpose of and procedures required for the study, before the initiation of any study specific procedures. Subjects who are unable to provide informed consent will not be included in the study.

Resides in a stable living situation, according to the investigator's judgment, and must have an identified informant who should be consistent throughout the study. If possible, the informant should accompany the subject or be available for in person ratings at the screening, baseline (Day 1), and final study visits. In person informant ratings on all relevant study visits are preferred whenever possible. However, if the informant is not available for in person ratings, telephone interview is acceptable. The informant must be available for a telephone interview throughout the study at all visits. As long as both the informant visit and subject visit are within the study visit windows, it is not necessary that they occur on the same day. The informant must interact with the subject at least 2 times a week.

Diagnosis of Schizophrenia of at least 3 years duration. This diagnosis can be established utilizing the SCID-I, direct clinical assessments, family, informants, and confirmation of diagnosis from clinical sources. These may include medical records, confirmation of diagnosis by treating clinician through telephone contact, or written confirmation from treating clinic. If the listed sources are not available, other sources of diagnostic confirmation may also be acceptable after discussion with the medical monitor.

Treated with atypical antipsychotic drug (in any approved dosage form) other than Clozapine at a stable dose for at least 8 weeks prior to screening and be clinically stable; the subject must remain clinically stable (in the opinion of the principal investigator) through randomization. The use of up to 2 atypical antipsychotic drugs is permitted, as long as in the opinion of the investigator, the second medication is not required to control treatment-resistant or intractable psychotic symptoms. No subject will be washed off antipsychotic therapy to become eligible for this study.

General health status acceptable for participation in a 26-week clinical study

Fertile, sexually active subjects (men and women) must use an effective method of contraception during the study

Fluency (oral and written) in the language in which the standardized tests will be administered

The ability to refrain from using any tobacco or other nicotine-containing products for at least 30 minutes before any cognitive testing

Exclusion Criteria:

Hospitalization within 12 weeks before screening or during the screening period, or change of antipsychotic medication or dose within 8 weeks before screening or during the screening period.

Participation in another therapeutic (medication administration) clinical study within the past 2 months.

Psychiatric hospitalization or incarcerations due to breakthrough symptoms or acute exacerbations for a period of 3 months before screening. Subjects with a recent "social" hospitalization or incarceration may be entered into screening after consultation with the medical monitor

Likelihood, in the opinion of the investigator, that either the subject or informant will be unable to complete a 26-week study

Treatment with prohibited antipsychotic drug, and/or treatment with more than 2 permitted antipsychotic drugs. Treatment with a first-generation antipsychotic drug (typical antipsychotic) is prohibited unless it is administered at a low dose after discussion with the medical monitor

Current treatment with any anticholinergic agent

Diagnostic and Statistical Manual of Mental Disorders, fourth edition (DSM-IV) criteria met for alcohol abuse within the past 3 months or substance abuse (other than nicotine) within the last 6 months before screening

Significant suicide risk as defined by 1) suicidal ideation as endorsed on items 4 or 5 of the Columbia-Suicide Severity Rating Scale (C-SSRS) within the past year; 2) suicidal behavior detected by the C-SSRS during the past 2 years, or 3) psychiatric interview and examination

Stroke within 6 months before screening, history of brain tumor, subdural hematoma, or other clinically significant neurological condition, head trauma with loss of consciousness within 12 months before screening

Monoamine oxidase inhibitor antidepressants or tricyclic medications used in antidepressant doses are excluded. Other antidepressant medications are allowed if the subject has been treated with a stable dose for at least 3 months before screening

Immunosuppressants, mood stabilizers, chronic use of a sedative hypnotic drug, chronic intake of clinically significant doses of opioid containing analgesics or any current methadone treatment all in the judgment of the investigator may be permitted depending on the circumstance

Use of Central Nervous System(CNS) stimulants

Nicotine therapy (including patches), varenicline (Chantix), or similar therapeutic agent within the last six months before screening

Use of a benzodiazepine medication is allowed if the subject has not had a change in medication or dose for at least 3 months. For subjects prescribed benzodiazepines, short-acting benzodiazepines are to be used whenever possible. Use of longer-acting benzodiazepines may be acceptable if prior authorization is obtained from the medical monitor. When possible, benzodiazepines should not be administered within 3 hours before cognitive testing. The use of more than one sedative-hypnotic medication is not allowed.

Contacts and Locations

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study.
To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below.
For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01716975

United States: Food and Drug AdministrationArgentina: Ministry of HealthAustralia: National Health and Medical Research CouncilColombia: National Institutes of HealthItaly: National Monitoring Centre for Clinical Trials - Ministry of HealthMexico: Ministry of HealthRomania: National Agency for Medicines and Medical DevicesRussia: Pharmacological Committee, Ministry of HealthUnited Kingdom: Medicines and Healthcare Products Regulatory AgencyUkraine: State Pharmacological Center - Ministry of HealthBrazil: Ministry of HealthPoland: Ministry of Health

Keywords provided by FORUM Pharmaceuticals Inc:

Schizophrenia
Cognition
Cognition Impairment
Alpha-7 nAChR

Additional relevant MeSH terms:

Schizophrenia
Mental Disorders
Schizophrenia and Disorders with Psychotic Features